fpga-tidbits

package utils

import chisel3._
import org.scalatest._

import fpgatidbits.utils.BitExtraction

class TestWrapper extends Module {
  val io = IO( new Bundle {
    val word = Input(UInt(32.W))
    val high = Input(UInt(8.W))
    val low = Input(UInt(8.W))
    val result = Output(UInt(32.W))
  })

  io.result := BitExtraction(io.word, io.high, io.low)
}



//class TestUtils(dut: TestWrapper) extends PeekPokeTester(dut) {
//  def TestBitExtraction(in: Int, h: Int, l: Int) = {
//
//    poke(dut.io.word, in.U)
//    poke(dut.io.high, h.U)
//    poke(dut.io.low, l.U)
//    step(1)
//    expect(dut.io.result, in.U(32.W)(h,l))
//  }
//
//  TestBitExtraction(123456789,8,1)
//  TestBitExtraction(123456789,7,6)
//  TestBitExtraction(123456789,32,4)
//  TestBitExtraction(123456789,3,0)
//}
//
//
//
//class SimpleSpec extends FlatSpec with Matchers {
///*
//  val t = new TestUtils
//  "BitExtraction" should "pass" in {
//    t.TestBitExtraction()
//  }
// */
//    "BitExtraction" should "pass" in {
//        chisel3.iotesters.Driver(
//          () => new TestWrapper)
//        {
//          c => new TestUtils(c)
//        } should be (true)
//    }
//
//}